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ESTIMATION OF DROUGHT TOLERANCE OF LOCAL AND PIONEER TOP COMERCIAL CORN HYBRIDS TESTED IN DIFFERENT PEDO-CLIMATIC AREAS FROM SOUTH OF ROMANIA

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Author(s): Viorel DINCA | Gabriela-Mariana STOICA | Alexandru CHIPER | Gabriela VALSAN | Valentin MANDACHE | Marina UBERTI | Anghelus FIERBINTEANU

Journal: Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development
ISSN 2284-7995

Volume: 12;
Issue: 1;
Start page: 45;
Date: 2012;
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Keywords: corn yield | cropping areas | drought tolerance | irrigation | Zea mays L

ABSTRACT
The purpose of the study was the estimation of the behavior of top commercial corn hybrids tested in 5 different pedo-climatic areas from drought tolerance perspective. The study was carried out in 2009, 2010 and 2011 in 5locations: Valu lui Traian,Constanta county; Sarichioi, Tulcea county; Fundulea, Calaraşi county; Cazasu, Brăila county and Caracal Olt county. These locations were selected as being representative for corn crop. Eight corn hybrids (F475M, Olt, Paltin, F376 from Fundulea Institute and PR35F38, PR37Y12 , PR36V74, PR37F73 from Pioneer) were tested using two level of water regime: irrigated with 800 3/ha and non-irrigated. The study showed that the 2009 was less favorable for corn crop in all testing areas, comparing with 2010 and 2011 which were favorable for corn crop. In the case of non-irrigated corn trials the yield was influenced by the climatic conditions of the year, while in the case of irrigated corn trials, the yield was much higher and stable. The hybrid PR36V74 had the highest yield in all irrigated and non irrigated testing areas. Average yield of the hybrids over three years were between 93.8 q/ha (F475M) and 130,3 q/ha (PR36V74)in non-irrigated condition, while in irrigated conditions average yield increased significantly by applying of 800 m3/ha: between 101.2 q/ha (F475M) and 155,9 q/ha (PR36V74).
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